PURPOSE: To dry dung body continuously with a simple device by agitating and fermenting the dung body as it is delivered into the next vessel successively from an upper side of each of the 1st and the 2nd fermentation vessels, which are having a central axis in common and are disposed above and under.

CONSTITUTION: After a dung body (m), which has been delivered into a supplying vessel 18, is dropped onto a circumferential part 6 of the 1st fermentation vessel 1 through a hole 3 for supply, said body is made to move toward a central part of the vessel 1 gradually as said body is agitated through the 1st agitating paddles 5, 5. Thereat, the body (m) begins to ferment through said agitation, and the body (m) is allowed to drop onto the 2nd fermentation chamber F2 as it goes over an outer surrounding wall of a cylinder 11. Hereafter, the body (m) is made to drop into the 3rd fermentation chamber F3 at the lower stage through a drop holes 7, 7 of the 2nd fermentation vessel 2. In the chamber F3, the body (m) is made to move toward a central part from a circumferential part, thereafter, the dried dung is, eventually, stored in a storing chamber 20 which is at the lowest stage, or taken out to the outside, by way of the 5th fermentation chamber F5.